Metal mold



April 27, 1926.

J. L. DOSTAL METAL MOLD Filed August 5. ,1925

1m 'ENTOR ATTORNEY.

Patented Apr. 27, 1926 I UNITED STATES PATENT OFFICE.

romp: 1.. menu, or nn'rnortr, MICHIGAN, nasmnon TO EARL HOLLEY, orDETROIT, MICHIGAN.

' METAL MOLD.

Application filed August 3, 1925. Serial No. 47,725.

, To all whom it may concern:

Be it known that I, JosErH L. DOSTAL, a citizen of the United States,residing at 8530 Dexter Blvd., Detroit, in the county of Wayne and Stateof Michigan, have invented certain new and useful Improvements in MetalMolds, of which the follow in is a specification.

' ihe ob ect of this invention is to provide means whereby a. metal moldof the type disclosed in the U. S. patent. to Phillips, #1,- 099,997,will I produce im roved vcastings. .The defect of castings pro need inthe said Phillips molds is that there is' a tendency for the iron toleak through the joints between the two molds.

Figure 1 shows the mold in elevation.

Figure 2 shows a cross sectional plan view on the plane 2-2 of Figure 1.

The mold, for illustration, is shown adapt ed for the casting ofpistons, and" corresponds to the type of mold shown in the pat out toMeloche #1,502,861.

The mold consists of two halves A and B,

.in the Philli namely for t e purpose of preventing or and a faoi jointC surrounding a corecavity D in wlich a core- Exis suspended and locatedconcentrically therein. The joint (I is milled off so that the twohalves of the mold come together on a relatively narrow face, for thesame. purpose as that described patent referred to above,

ing rib surrounding said cavity, a groove dividing said facing rib intotwo relatively narrow strips separated by said groove. r

In testimony whereof I aflix my signature.

JOSEPH L. DOSTAL.

